JP2001012737A - Fuel tank exchange type gas lighter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount and demount a fuel tank through half-rotation in a way that the body of a closing valve on the combustion device side forms a cylinder body and to perform reliable and airtight connection between the closing valve and a fuel valve. SOLUTION: This gas lighter comprises an upper structure 1 provided at a central part with a combustion device 13 and a closing valve 14 right therebelow; an exchangeable fuel tank 2 situated below the upper structure 1, and a case 3 covering the fuel tank 2 and fitted in the upper structure 1. A valve body 15 of the closing valve 14 forms a cylinder body partitioned into a valve chamber 16 and a lower end opening 17 by a partition 15a, and is protruded long under the upper structure. An insertion hole 21 of the valve body 15 is recessed in the central part of the upper surface of the fuel tank 2. The lower end opening of the valve body 15 is fitted in an airtight manner in the insertion hole 21, and a fuel valve 22 is provided to be opened against a spring member 27 through contact with the partition 15a. A pair of engaging members 4 and 5 fitted in each other on both sides of the valve body 15 and the insertion hole 21 through rotation are protruded from the upper structure 1 and the fuel tank 2, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank exchange type gas in which an upper structure provided with a crater and an ignition device is provided separately from a fuel tank, and liquefied gas fuel can be supplied by replacing the tank. It is about a writer.

[0002]

In a gas lighter in which the fuel tank is exchangeable, the outlet provided on the upper surface of the fuel tank is sealed with a rubber valve or the like, and the needle valve provided on the rubber valve for the combustion valve. Or the like when the fuel tank is mounted to connect the fuel tank with the combustion valve, or attach a valve device provided with a valve pipe to the fuel tank, and screw the valve device into the opening at the lower end of the main body of the combustion valve. To connect the valves and to open the valve pipe to open the fuel tank and the combustion valve.

[0003] In the connection of the valves with each other by a needle tube or the like,
The needle tube is easily bent due to the restriction on the thickness of the needle tube and the like and the elastic resistance of the rubber valve, and the needle tube is bent every time the fuel tank is replaced, making it difficult to penetrate. Another problem is that the combustion valve must be replaced. Further, in connection by screwing, the fuel tank must be rotated one or more rotations, so that close connection cannot be achieved with about half a rotation, and airtightness after opening the valve by pressing the valve pipe is incomplete. Fuel leakage is likely to occur, and in order to prevent the fuel leakage, it is necessary to change the fuel tank and rotate the fuel tank several times. There is also a problem that if the screw is excessively screwed in, the screw can not be easily unscrewed for replacement.

The present invention has been conceived in order to solve the above-mentioned conventional problems. It is an object of the present invention to make a main body of an opening / closing valve on a combustion device side a cylindrical body and dispose engagement members on both sides thereof. By doing so, a new fuel tank replaceable gas lighter can be provided that can easily disengage the fuel tank by half a rotation by a half turn, and also can securely and airtightly connect the open / close valve and the fuel valve. Is to do.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided an upper structure in which a combustion device having a crater is connected to an opening / closing valve immediately below the crater and installed in a central portion, and a piezoelectric igniter is juxtaposed on a side portion thereof. Body, a replaceable fuel tank connected to the lower side of the upper structure, and a case that covers the fuel tank and forms a lighter form by fitting with the upper structure. The valve body is formed as a cylindrical body having a partition partitioned into a valve chamber and a lower end opening. The valve body protrudes long below the upper structure, and the insertion hole of the valve body is recessed in the center of the upper surface of the fuel tank. A fuel valve that fits airtightly into the lower end opening of the valve body in the insertion hole and opens against the valve-closing spring member by contact with the partition; And both sides of the insertion hole A pair of engaging members fitted to each other are projected from the lower side of the upper structure and the upper surface of the fuel tank, respectively, so that the fuel tank and the upper structure are configured to be freely detachable. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, reference numeral 1 denotes a structure constituting an upper portion of a lighter, reference numeral 2 denotes a fuel tank, reference numeral 3 denotes a fuel tank, and reference numeral 3 designates a vertically elongated flat rectangular parallelepiped lighter by fitting with the upper structure 1. This is the case where the form is formed.

The upper structure 1 comprises an upper plate 11 forming an upper surface of a lighter having a rectangular planar shape, and a support plate 1 below the upper plate 11.
And a combustion device 13 having a crater 12 in which a discharge electrode is provided at the center of the upper surface plate 11. The opening and closing valve 14 is provided on the support plate 12 directly below the combustion device 13.
The on-off valve 14 has the combustion device 1
3 is connected so that liquefied gas fuel can be supplied from the fuel tank 2 to the nozzle member 12 a in the crater 12.

The valve body 15 of the opening / closing valve 14 is formed of a cylindrical body, and the inside thereof is divided into an upper valve chamber 16 and a lower end opening 17 by a partition 15a having a through hole. The valve body 15 has its upper part inserted through and fixed to the support plate 12 and protrudes long below the upper structure 1.

Reference numeral 18 denotes a piezoelectric igniter, in which an operating member 18a is inserted upward from above into a housing portion 19 formed on one side of the upper structure 1, and the combustion device 13 and the opening / closing valve 1 are inserted.
4, and the tip of the lead wire is connected to the crater 1 above.
2 discharge electrodes.

The fuel tank 2 has an insertion hole 21 for the valve body 15 at the center of the upper surface. The insertion hole 21 is recessed at the center of the upper surface 20 formed in multiple stages so as to correspond to the lower shape of the upper structure 1, and a fuel valve 22 is installed therein.

On both sides of the valve body 15 and the insertion hole 21, a pair of engaging members 4 by outward leg pieces which are fitted to each other by rotation, and a pair of engaging members by inward engaging pieces. A member 5 projects from the lower side of the upper structure 1 and the upper surface of the fuel tank 2, and the fuel tank 2 can be detachably attached to the upper structure 1 by the engaging members 4 and 5. It is like that.

As shown in detail in FIGS. 5 and 6, the fuel valve 22 has an outer diameter substantially the same as the inner diameter of the lower end opening 17 of the valve body 15, and a small-diameter mounting pipe 24 formed integrally at the lower end. A valve main body 23, a valve rod 25 integrally having a flange 25a around the lower part of a rod having a transverse groove formed at the upper end, and an annular valve body 26 fitted around the rod above the flange 25a; And a valve cover member 28 having an insertion hole having a larger diameter than the valve rod 25 at the center.

The valve rod 25 is housed inside the valve body 23 with the spring member 27 interposed between the flange 25a and the supply pipe 29 inserted into the lower end of the mounting pipe 24, 28, the upper part of the valve rod projects outside through the insertion hole, and the compressed spring member 27
The annular valve element 26 is moved by the repulsive force of
Flow gap 3 formed around the valve rod by being pressed against the back surface of
0 is always closed.

In such a fuel valve 22, an O-ring is fitted to the upper and lower periphery of the valve body 23 and the outer step of the mounting pipe 24, and the mounting pipe 24 is pressed into the lower part of the insertion hole 21. As a result, the valve body 15 is airtightly installed in the insertion hole 21, and an insertion gap of the valve body 15 is formed around the outside of the valve body 23.

To replace the fuel tank 2 in the gas lighter having the above structure, the used fuel tank 2 is first removed from the upper structure with the case 3 removed, as shown in FIGS. Valve body 1 up to a position orthogonal to body 1
5 rotates about an axis. As a result, the engaging members 4 and 5 fitted to each other are released, and the fuel tank 2 is free with respect to the upper structure 1.

Next, when the fuel tank 2 is separated from the valve body 15 in this state, the lower end of the valve body 15 fitted in the insertion hole 21 comes out, and the fuel tank 2 is separated from the upper structure 1. I do. At the time of this extraction, the valve rod 2 which was housed in the lower end opening 17 and was pressed by the partition 15a
5 is pushed upward together with the annular valve element 26 by the resilience of the spring member 27, and the annular valve element 26 closes the flow gap 30 around the rod, shuts off the flow of fuel gas, and cuts off the fuel valve 22. Fuel leakage from the vehicle is prevented.

Next, a new fuel tank 2 is connected to the upper structure 1.
When the insertion hole 21 of the upper surface 20 is applied to the lower end of the valve body 15 and the fuel tank 2 is further pressed to push the insertion hole 21 into the valve body 15, the fuel valve 22 The lower peripheral wall of the valve body 15 on the upper structure side fits into the gap around the valve body 23, and the fuel valve 22 enters the lower end opening 17.

In the lower end opening, the upper end of the valve rod 25 projecting from the valve lid 28 abuts against the partition 15a,
Since it is pushed in against the spring member 27, the annular valve body 226 separates from the valve lid body 28 to open the flow gap 30 around the valve rod. As a result, the fuel gas in the fuel tank 2 flows from the flow gap 30 through the lateral groove at the valve rod tip to the opening / closing valve 14 through the through hole of the partition 15a.

In this state, when the fuel tank 2 is rotated around the valve body 15 to a position where the fuel tank 2 overlaps the upper structure 1, the engaging members 4 and 5 are fitted to each other, and the fuel tank 2 is connected to the upper structure. 1 is integrally connected to the lower side,
Further, the above-described valve open state is maintained. Thereafter, the case 3 is fitted from below the fuel tank 2, and the opening edge thereof is fitted to the lower peripheral edge of the upper structure 1. This results in the formation of a lighter of normal form.

According to the above configuration, the fuel tank 2 is engaged with and disengaged from the upper structure 1 by using the valve body 15 formed by the cylinder on the upper structure side fitted into the insertion hole 21 on the fuel tank side as a rotation axis. Therefore, the engagement of the fuel tank is difficult to occur, and the operation of the fuel tank at the time of replacement can be performed by only half a rotation. Therefore, the operation of rotating after the fitting or removing after the rotation can be performed without changing the fuel tank 2. There is no trouble in replacing the fuel tank 2.

The connection between the opening / closing valve 14 on the upper structure side and the fuel valve 22 on the fuel tank side is made by connecting the lower end opening 17 of the valve body 15 in the insertion hole 21 and the valve body 23
The valve rod 2 is made airtight by fitting
Since the fuel valve 22 is also opened by pushing the valve 5, the connection between the two valves is ensured even when the operation is performed by a half turn, so that fuel leakage hardly occurs. Even when the tank is removed, the lower end of the valve body 15 comes out of the insertion hole 21. Since the fuel valve 22 is closed beforehand, leakage of residual gas in the fuel tank is also prevented.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a gas lighter according to the present invention.

FIG. 2 is a plan view of the fuel tank in which the upper structure side is indicated by a chain line.

FIG. 3 is a vertical sectional front view of a gas lighter when a fuel tank is replaced.

FIG. 4 is a plan view of the fuel tank in which the upper structure side is indicated by a chain line.

FIG. 5 is a longitudinal sectional view of the valves, showing a connection state between the open / close valve and the fuel valve in FIG. 1;

FIG. 6 is a longitudinal sectional view of the valves, showing a connection state between the open / close valve and the fuel valve when the fuel tank is removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper structure 2 Fuel tank 3 Case 4 Upper structure side engaging member 5 Fuel tank side engaging member 12 Support plate 13 Combustion device 14 Opening / closing valve 15 Valve main body 15a Partition 16 Valve chamber 17 Lower end opening 20 Top surface of fuel tank 21 insertion hole 22 fuel valve 23 valve body 25 valve rod 26 annular valve body 27 spring member

Claims (1)

[Claims] 1. A combustion device having a crater is connected to an opening / closing valve immediately below the combustion device, and is installed at a central portion, and a piezoelectric ignition device is juxtaposed on a side portion thereof. It comprises a connected replaceable fuel tank and a case which covers the fuel tank and forms a lighter form by fitting with the upper structure. The valve body of the open / close valve is partitioned into a valve chamber and a lower end. As a cylindrical body divided into an opening, it protrudes long below the upper structure, while an insertion hole of the valve body is recessed at the center of the upper surface of the fuel tank, and the insertion hole of the valve body is inserted into the insertion hole. A fuel valve that fits tightly into the lower end opening and opens against the valve-closing spring member by contact with the partition is provided.Furthermore, by turning both sides of the valve body and the insertion hole, A pair of engaging members that fit each other, Each projecting from the upper surface of the parts structure bottom and the fuel tank, a fuel tank and a fuel tank replaceable gas lighters which characterized by being disengageably configure the upper structure.